<template>
  <div>
    <nav-bar>
      <template #left>
        <div class="back"
             @click="backClick">
          <img src="~assets/img/common/back.svg"
               alt="">
        </div>
      </template>

      <template #center>
        <div class="title">
          <div v-for="(item,index) in titles"
               :key="item"
               class="title_item"
               :class="{'active':index === currentIndex}"
               @click="titleClick(index)">
            {{item}}
          </div>
        </div>
      </template>
    </nav-bar>
  </div>
</template>

<script>
import NavBar from 'components/common/navbar/NavBar'
export default {
  name: 'DetailNavBar',
  data() {
    return {
      titles: ['商品', '参数', '评论', '推荐'],
      currentIndex: 0
    };
  },
  components: {
    NavBar
  },
  created() {

  },
  mounted() {

  },
  methods: {
    titleClick(index) {
      this.currentIndex = index
      this.$emit('titleClick', index)
    },
    backClick() {
      this.$router.back()
    }
  }
};
</script>

<style scoped>
.title {
  display: flex;
  font-size: 13px;
}

.title_item {
  flex: 1;
}

.active {
  color: var(--color-high-text);
}

.back img {
  margin-top: 13px;
  width: 30%;
}
</style>
